Mesa (master): radeon/llvm: Use a custom inserter to lower FNEG

[Tom Stellard]

Module: Mesa
Branch: master
Commit: 667cdba2118cf82e0027bf44314c9d1334d00840
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=667cdba2118cf82e0027bf44314c9d1334d00840

Author: Tom Stellard <thomas.stellard at amd.com>
Date:   Fri May 25 10:59:52 2012 -0400

radeon/llvm: Use a custom inserter to lower FNEG

---

 src/gallium/drivers/radeon/AMDGPUInstructions.td   |    7 +++++++
 src/gallium/drivers/radeon/AMDILInstructions.td    |    5 -----
 src/gallium/drivers/radeon/R600ISelLowering.cpp    |    7 +++++++
 src/gallium/drivers/radeon/R600Instructions.td     |    1 +
 .../drivers/radeon/R600LowerInstructions.cpp       |   17 -----------------
 5 files changed, 15 insertions(+), 22 deletions(-)

diff --git a/src/gallium/drivers/radeon/AMDGPUInstructions.td b/src/gallium/drivers/radeon/AMDGPUInstructions.td
index 1f0d582..a004b9c 100644
--- a/src/gallium/drivers/radeon/AMDGPUInstructions.td
+++ b/src/gallium/drivers/radeon/AMDGPUInstructions.td
@@ -74,6 +74,13 @@ class FABS <RegisterClass rc> : AMDGPUShaderInst <
   [(set rc:$dst, (fabs rc:$src0))]
 >;
 
+class FNEG <RegisterClass rc> : AMDGPUShaderInst <
+  (outs rc:$dst),
+  (ins rc:$src0),
+  "FNEG $dst, $src0",
+  [(set rc:$dst, (fneg rc:$src0))]
+>;
+
 } // End isPseudo = 1, hasCustomInserter = 1
 
 } // End isCodeGenOnly = 1
diff --git a/src/gallium/drivers/radeon/AMDILInstructions.td b/src/gallium/drivers/radeon/AMDILInstructions.td
index 869c2bb..0197e94 100644
--- a/src/gallium/drivers/radeon/AMDILInstructions.td
+++ b/src/gallium/drivers/radeon/AMDILInstructions.td
@@ -50,7 +50,6 @@ def INTTOANY_i16: OneInOneOut<IL_OP_MOV, (outs GPRI16:$dst), (ins GPRI32:$src0),
 //===---------------------------------------------------------------------===//
 // Signed 32bit integer math instructions start here
 //===---------------------------------------------------------------------===//
-defm NEGATE     : UnaryOpMCi32<IL_OP_I_NEGATE, IL_inegate>;
 // get rid of the addri via the tablegen instead of custom lowered instruction
 defm EADD   : BinaryOpMCi32<IL_OP_I_ADD, adde>;
 def INTTOANY_i32: OneInOneOut<IL_OP_MOV, (outs GPRI32:$dst), (ins GPRI32:$src0),
@@ -238,10 +237,6 @@ defm NEAR : UnaryOpMCf32<IL_OP_ROUND_NEAR, fnearbyint>;
 defm RND_Z : UnaryOpMCf32<IL_OP_ROUND_ZERO, ftrunc>;
 
 // This opcode has custom swizzle pattern encoded in Swizzle Encoder
-def NEG_f32         : OneInOneOut<IL_OP_MOV, (outs GPRF32:$dst),
-  (ins GPRF32:$src0),
-    !strconcat(IL_OP_MOV.Text, " $dst, $src0"),
-    [(set GPRF32:$dst, (fneg GPRF32:$src0))]>;
 def INTTOANY_f32    : OneInOneOut<IL_OP_MOV, (outs GPRF32:$dst),
   (ins GPRI32:$src0),
     !strconcat(IL_OP_MOV.Text, " $dst, $src0"),
diff --git a/src/gallium/drivers/radeon/R600ISelLowering.cpp b/src/gallium/drivers/radeon/R600ISelLowering.cpp
index 59a2bb1..de60a2d 100644
--- a/src/gallium/drivers/radeon/R600ISelLowering.cpp
+++ b/src/gallium/drivers/radeon/R600ISelLowering.cpp
@@ -115,6 +115,13 @@ MachineBasicBlock * R600TargetLowering::EmitInstrWithCustomInserter(
            .addOperand(MI->getOperand(1));
     break;
 
+  case AMDIL::FNEG_R600:
+    MI->getOperand(1).addTargetFlag(MO_FLAG_NEG);
+    BuildMI(*BB, I, BB->findDebugLoc(I), TII->get(AMDIL::MOV))
+            .addOperand(MI->getOperand(0))
+            .addOperand(MI->getOperand(1));
+    break;
+
   case AMDIL::R600_LOAD_CONST:
     {
       int64_t RegIndex = MI->getOperand(1).getImm();
diff --git a/src/gallium/drivers/radeon/R600Instructions.td b/src/gallium/drivers/radeon/R600Instructions.td
index 22f3fc1..a2a509e 100644
--- a/src/gallium/drivers/radeon/R600Instructions.td
+++ b/src/gallium/drivers/radeon/R600Instructions.td
@@ -1070,6 +1070,7 @@ def TXD_SHADOW: AMDGPUShaderInst <
 
 def CLAMP_R600 :  CLAMP <R600_Reg32>;
 def FABS_R600 : FABS<R600_Reg32>;
+def FNEG_R600 : FNEG<R600_Reg32>;
 
 let isPseudo = 1 in {
 
diff --git a/src/gallium/drivers/radeon/R600LowerInstructions.cpp b/src/gallium/drivers/radeon/R600LowerInstructions.cpp
index 1795b38..3b96b19 100644
--- a/src/gallium/drivers/radeon/R600LowerInstructions.cpp
+++ b/src/gallium/drivers/radeon/R600LowerInstructions.cpp
@@ -224,23 +224,6 @@ bool R600LowerInstructionsPass::runOnMachineFunction(MachineFunction &MF)
         continue;
       }
 
-      case AMDIL::NEGATE_i32:
-        BuildMI(MBB, I, MBB.findDebugLoc(I), TII->get(AMDIL::SUB_INT))
-                .addOperand(MI.getOperand(0))
-                .addReg(AMDIL::ZERO)
-                .addOperand(MI.getOperand(1));
-        break;
-
-      case AMDIL::NEG_f32:
-        {
-            MI.getOperand(1).addTargetFlag(MO_FLAG_NEG);
-            BuildMI(MBB, I, MBB.findDebugLoc(I),
-                    TII->get(TII->getISAOpcode(AMDIL::MOV)))
-            .addOperand(MI.getOperand(0))
-            .addOperand(MI.getOperand(1));
-          break;
-        }
-
       case AMDIL::ULT:
         BuildMI(MBB, I, MBB.findDebugLoc(I), TII->get(AMDIL::SETGT_UINT))
                 .addOperand(MI.getOperand(0))